Milverton blackmails Mary, exploiting her dalliance in antigovernment activities as a student. Sherlock decides to sneak into Milverton's estate to steal his evidence, but even that act was anticipated. Sherlock finds that he is not the only trespasser.
I just saw a flash of light.
First storey, west side.
Da hat etwas geleuchtet.
Acabo de ver un destello de luz.
Primer piso, ala oeste.
Il y a de la lumière en bas, côté ouest.
Acabei de ver uma luz,
primeiro andar, lado oeste.
Там что-то блеснуло.